Plug-cock.



J. MATSGHKE.

PLUG COOK,

APPLICATION FILED NOV. 24, 1911.

Patented July 15, 1913.

UNITED STATES PATENT OFFICE.

JULIUS MATSCHKE, OF BERLIN-TEGEL, GERMANY.

PLUG-COCK.

Specification of Letters Patent.

Patented July 15, 1913.

Application filed November 24, 1911. Serial No. 662,184.

resident of Berlin-Tegel, Germany, have 1nvented new and usefulImprovements in Plug-Cocks, of which the following is a specification.

My invention relates to those plug cocks in which the area of theplug-passage may be regulated by a special means, and the inventionrelates further to a special construction of the plug cook.

The object of my invention is illustrated on the accompanying drawingsin which- Figure 1 shows the cock with a fully opened passage invertical section, Fig. 2 shows the lower portion'of the cock with itsplug-passage nearly closed by the special means, Fig. 3 is a horizontalsection on line A -A of Fig. 2, Fig. 4 is the plug cock in plan, Fig. 5shows on an enlarged scale the sleeve shaped plug in vertical section, Fig. 6 shows the same in cross section on line BB of Fig. 5, and Fig. 7in side elevation With reference to the drawings the plug cock comprisesa body (I of any suitable form. A portion of the passage 1) of the bodyis formed by a central vertical cylindrical chamber within which thesleeve shaped cylindrical. plug 0 is placed. The latter has twooppositely arranged windows (I forming, when in their respective)ositions, the passages through the sides 0 the plug 0; Within said plugthere is guided a slide 6. It consists pf a ground plate f and twooppositely arranged wings g in rigid connection with the latter. TheseWings lie close to the windowl portion of the inner surfaceof the plugEach wing is guided by two ribs g which project from the inner surfaceofthe plug 0. The means for keeping the slide a in position consists of arod 12 rigidly fixed to the ground plate 1 at its lower end. A portionof said rod is screw threaded, and this portion engages a screw threadedpart i of the cork body. so that the slide 6 is able to be muted withrespect to the lug c and its windows by turning the rod in one or theother direction. whereby the uncovered area of the plug windows ol isregulated. The upper end of the rod h which projects out of the cockbody is provided with a detachable handle It. To the hub of said handleis fixed a vertical member [provided with a. scale m. The member moveswith its end within a curved slot m of a disk n of the cock body. Themember indicates the position of the slide 0 with respect to the windows(Z of the plug a. The ribs a of the plug 0 at the same time stiffen thetightening wall of the plug. To the outer circumference of the latterthere are arranged a number of grom'es 0 inorder to make the plug wallresilient. The one window side of the wall is rut through (Fig. 5), sothat the plug has a natural springiness. With respect to the mentionedronstruction of the plug only a proportionally narrow tightening faceissul'lieient for always obtaining a tightness of the cork.

Having now described the nature of my invention what I claim is:

1. In a plug cock the combination of the body, a springy sleeve shapedplug therein provided with two opposite windows forming passages throughthe sides of the plug, a slide in the plug for regulating the flowthrough said windows, a number of ribs projecting from the inner wall ofsaid plug for guiding said slide, and means to! :ictu ating said slide,as and for the purpose specified.

2.. In a plug cock the combination of the 1 body, a sleeve shaped plugtherein with .1 number of grooves on its outer surface parallel with theaxis and two opposite win- (lows in its wall forming passages throughthe sides of the plug. a slide in the plug for Copies of this patent maybe obtained for live cents each, by addressing the Commissioner ofPatents,

' Washington, D. 0.

